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3 years ago

(8+9) - (8+7) x (7 x 87)

Mathematics

2 answers:

rosijanka [135]3 years ago

7 0

i think its -9118 sorry if im wrong

Stells [14]3 years ago

4 0

Answer:

-1,918

Step-by-step explanation:

PEMDAS says to do the parenthesis first. So,

8+9=17

8+7=15

7x87=609

which gives us,

17-15 x 609

Next is multiplication

15 x 609= 9,135

which gives us,

17-1,935= -1918

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3 years ago

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3 years ago

Bobby read a total of 20 books over 2 months. If Bobby has read 90 books so far, how many months has he been with his book club?

tatuchka [14]

Step 1

From the question;

$\begin{gathered} Bobby\text{ reads 20 books in 2 months} \\ \end{gathered}$

We are required to find how many months it will take him to read 90 books

Step 2

We will use the ratio below to solve the problem.

$\begin{gathered} \frac{20\text{ books}}{90\text{ books}}=\frac{2months}{x} \\ x=months\text{ to read 90books} \\ x=\frac{90\times2}{20} \\ x=9\text{ months} \end{gathered}$

Answer; It will take Bobby 9months to read 90 booj

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